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How BYD got EV chargers to work almost as fast as gas pumps
81–90 of 286 posts
Re: How BYD got EV chargers to work almost as fast as gas pumps
#82Is this how the US falls behind? Missing technological improvements due to blind disagreements with Chinese/etc, combined with inability to update infrastructure? (Unclear how/why but datacenters being stood up so quickly seems like an exception to US’s bad construction)
China is what happens when you put scientists and engineers in charge [1][2]. 20 years ago China had a single high speed rail link in Shanghai going to the airport. Now they have more than 30,000 miles of high speed rail where they've bootstrapped all the civil engineering, they make their own trains, etc. The system handles over 4 billion trips annually and they built the entire thing for an estimated $900 billion […
Xi is the first President/leader China has had who literally never worked another job outside of politics and doesn’t speak a foreign language. They gave him a degree in chemical engineering when the universities re-opened after the cultural revolution but he never even had to pretend to use it. Hu, Jiang, and Deng actually worked as engineers and spoke languages besides Chinese (Russian and/or English).
Despite all that, Xi has done really well for China. I was totally predicting the opposite given that Xi was clearly a departure from the technocratic leaders that previously ran China (I thought Xi was a Mao throwback).
Re: How BYD got EV chargers to work almost as fast as gas pumps
#83Cool! My only concern is that Wired has a very long and consistent history of advertising technologies that don't work quite as they say. So let's hope this is real.
Re: How BYD got EV chargers to work almost as fast as gas pumps
#84Earlier quoted context omitted.
I believe you meant to write “10S” instead of 10p. I’m not 100% sure, but you were talking about e-bike batteries, which are often 36V, made out of 10 cells (or banks of cells) in series. The nominal voltage of most lithium chemistries is 3.6-3.7V. EV batteries have many more cells in series, for example my car is 104S, and 800V cars have (obviously) more than 200 cells in series. And the longevity of car batteries i…
Indeed, I meant 10S. And what I meant by load being distributed along more cells, is that since you have many more cells, current drawn from each is lower. Which greatly prolongs the lifetime. And hence the question I had with charging too fast. Since discharging faster clearly wears them more quickly, surely charging faster has a similar effect, since it's mostly the reversed process? A question probably easily answ…
“Number of cells” doesn’t really tell you anything about current and how it will affect the battery. The number of cells in series gives you the nominal voltage of the entire battery, and the P number (number of cells in parallel) rarely tells you anything useful — three 2000 mAh cells in parallel are equivalent to one 6000 mah cell, and both approaches are valid and used.
What you care about is actually the mass of the cells, basically the total weight of the active material. More material means higher capacity and can withstand more current.
For example, my car is 104S and that’s it, no parallel connections, but the individual cells are huge (~170 Ah each).
Re: How BYD got EV chargers to work almost as fast as gas pumps
#85Earlier quoted context omitted.
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I think you'd have to be a bit ignorant of very recent history to think that America is some cesspool of lack of innovation in the electric car industry. They invented it, despite there being no competition at the time.
America certainly did not invent electric cars. Depending on which electric car you consider the first real one, the inventor was either French, British or German [1].
[1]: https://en.wikipedia.org/wiki/History_of_the_electric_vehicl...
Re: How BYD got EV chargers to work almost as fast as gas pumps
#86This [0] is the actual (good) news, linked from the article. [0] https://www.techradar.com/vehicle-tech/hybrid-electric-vehic...
With 5 minute charging, suddenly conventional gas stations can be used for EVs just as they are for ICE. Nice thing about 'plugging in' as opposed to 'filling up' is that a charging car can be left completely unattended (while you go to pay, get a coffee, or whatever). Seems that the technological barriers have been overcome, now we just need to build out the infrastructure - which could be as simple as retooling exi…
Yes, retooling gas stations is the way to go. Already happening in Norway where stations now show the price of kWh in addition to gas and diesel prominently on signs by the road. Charging is just a different kind of pump.
Re: How BYD got EV chargers to work almost as fast as gas pumps
#87Earlier quoted context omitted.
China is what happens when you put scientists and engineers in charge [1][2]. 20 years ago China had a single high speed rail link in Shanghai going to the airport. Now they have more than 30,000 miles of high speed rail where they've bootstrapped all the civil engineering, they make their own trains, etc. The system handles over 4 billion trips annually and they built the entire thing for an estimated $900 billion […
Xi is the first President/leader China has had who literally never worked another job outside of politics and doesn’t speak a foreign language. They gave him a degree in chemical engineering when the universities re-opened after the cultural revolution but he never even had to pretend to use it. Hu, Jiang, and Deng actually worked as engineers and spoke languages besides Chinese (Russian and/or English). Despite all…
Xi is a fascinating figure. I had real concerns when he pushed through repealing term limits. I thought this could be another Putin but that hasn't been the case.
First, he's had a real anti-corruption push that seems to be meaningful and seems to apply to senior government officials and the wealthy (eg Jack Ma).
Second, real estate speculation was rampant in China for years but Xi quietly popped the bubble more than a decade agao. The property market is still in a dire state but he took the long-term view that housing should be for, well, housing, not investment. He did this by basically increasing the margin requirements that ultimately caused the Evergrade default. I think history will show this was the correct decision.
Third, Xi grew up as "Mao royalty". His father was one of Mao's lieutennants and he was a privileged child of that circle. But when he was a teenager, his father was purged in the Cultural Revolution and was ultimately expelled from the CCP. Xi repeatedly tried to join the party and ultimately succeeded then spending years quietly working in backwaters.
Lastly, Xi has quietly purused a policy of not relying on the West. Investments in renewable energy has been truly massive. Watch in the coming years as China catches up to ASML and TSMC with EUV, a technology that US has embargoed from export to China.
Re: How BYD got EV chargers to work almost as fast as gas pumps
#88Absolute garbage. Just stop and think for one second what kind of power delivery is required to do this and you will quickly realize that’s it’s not feasible anywhere other than as a demo.
I'll bite. They dumped a lot of power in a small amount of time. Sounds like the perfect job for a mega capacitor to streamline deployments. Other than the successful technology, Mrs. Lincoln, what are your gripes?
Cool now at your busy "gas" station keep it working as the pile gets exhausted and you don't have the supporting grid to be able to deliver the needed power to keep it stocked with "gas".
At least not in Europe.
From what I read it's 1500 kW at 1000V or Peak use of 1.5 MW at 1000 A. That's a crazy amount of power.
You will exhaust your piles quickly, or they are enormous. So it's like "quick-charge" until we run out?
Re: How BYD got EV chargers to work almost as fast as gas pumps
#89Although the thought of getting an electric car has passed through my mind on a few occasions, I'm not 100% familiar with the intricate technical details. (for some reason, the tax incentives where I live are still in favor of continuing with the small petrol car I have. Taxes are primarily a function of weight in the Netherlands, and anything besides a lightweight Dacia Spring would imply significantly higher monthl…
Rule of thumb for modern EVs is to not care about the battery at all. They are expected to last longer than the car. I would doubt even faster charging significantly changes this, or if it does it’s worth the trade off to those who need it.
Re: How BYD got EV chargers to work almost as fast as gas pumps
#90Earlier quoted context omitted.
The american government pretends to care, but the moment you look deeper (snowden leaks), it's clear that they don't. But the fact still stands, the population is mostly against surveilance while chinese just keep their head down.
They have to keep their head down for fear it will get cut off (figuratively speaking, mostly). I doubt the majority of Chinese civilians are happy to be in a repressed state such as the one they're in. And unfortunately it's pretty clear the current administration is working hard to enact a similar chilling effect on free speech. It's hard to see how we avoid becoming a similarly surveilled and repressed state if th…
> They have to keep their head down for fear it will get cut off (figuratively speaking, mostly). I doubt the majority of Chinese civilians are happy to be in a repressed state such as the one they're in.
Around 100 million Chinese people travel abroad every year, and they all return to their country of their own free will. Go to China and see it for yourself. Talk with people, you would be surprised. Go to Shanghai and visit the provinces. This is not North Korea, you can talk with people normally. The majority of them will tell you that they are happy with how much their lives have improved over the last five decades. Every five years during those decades, life got better and better for most of them. And if you read about their history, you will see that this is their natural state. China has a long history of centralized, bureaucratic governance (more than 2,000 years since the Qin Dynasty) in which stability and order are prioritized over political pluralism.